Cadillac Repair: 1995 Cadillac Eldorado, cadillac eldorado, climate control

Question
I keep seeing where people get computer codes telling them what is wrong with their car, how do I do that.  Don't laugh, I am a female lol.

Answer
Ignition ON. Engine OFF.

Simultaneously push and hold the OFF and WARMER buttons on your climate control panel for 3 seconds and release them.

Write down EVERYTHING you see EXACTLY in the order in which it appears until you see PCM?.

Turn OFF ignition.

Let me know what displays.